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ListMessenger exceeds expectations as a well designed, easy to use, lightweight mailing list management solution for your website. ListMessenger is feature packed but because of its intuitive design remains simple to use and easy to maintain.
ListMessenger 2.2.1 Now Available Follow @ListMessenger on Twitter

Can I use the free version on my commercial website?

Yes you may! Unlike many other free mailing list applications, you're welcome to use ListMessenger Light on a commercial website. The only restriction being that you may not use ListMessenger to send spam, as some places consider this a commercial industry.

If you're using ListMessenger Light on a commercial website, we would appreciate knowing about it or would gladly accept a link back to our website from yours (although this is not required)! Enjoy the program!